摘要
【目的】为明确短时高温对绿豆象Callosobruchus chinensis(L.)各虫态及其后虫态生长发育与繁殖能力的影响。【方法】以27℃饲养的绿豆象为对照,在30、33、36、39、42和45℃条件下分别对绿豆象卵、幼虫、蛹和成虫进行3 h的短时高温处理。【结果】短时高温对绿豆象卵的孵化率、幼虫的化蛹率和蛹的羽化率均有显著影响,但对卵和幼虫的后续发育影响不显著;幼虫耐高温的能力最强,经短时高温处理后化蛹率均在90%以上;蛹经45℃短时高温处理后虽表现出较高的羽化率,但羽化后成虫的寿命和产卵量均显著降低。卵期、幼虫期和成虫期绿豆象对短时高温的耐受性均有性别差异,其中,卵期和蛹期雄虫耐热性强于雌虫,成虫期雌虫强于雄虫。短时高温处理对绿豆象成虫的繁殖能力影响显著,经45℃处理后成虫的产卵量为32.30粒/头,显著低于对照。【结论】39℃以上的短时高温对绿豆象处理虫态及雌雄性别比有明显的影响,对其后虫态发育的影响仅见高温处理蛹后导致成虫繁殖能力下降。
[Objectives]To illustrate the effect of temperature on different developmental stages of Callosobruchus chinensis,including subsequent development and reproductive capacity.[Methods]Different developmental stages of C.chinensis,which had been raised at 27℃(the control temperature),were exposed to higher temperatures(30,33,36,39,42,45℃)for 3 hours.[Results]The hatching rate of eggs,pupation rate of larvae and the eclosion rate of pupae significantly decreased with exposure to higher temperatures,but exposure to higher temperatures had no significant effect on the subsequent development of eggs and larvae.Larvae were more heat tolerant than pupae having a pupation rate of>90%after short-term heat stress,but pupae also had a relatively high eclosion rate after exposure to 45℃.However,adults that emerged from pupae exposed to 45℃had a significantly shortened life span and reduced egg production.There were gender differences in the heat stress tolerance of eggs,larvae and adults and short-term heat stress also had a significant effect on fecundity.Average egg production was 32.30 after exposure to 45℃,significantly lower than that of the control.[Conclusion]Short-term exposure to temperatures above 39℃have a significant effect on the hatching,pupation and eclosion rates,and the sex ratio,of C.chinensis.Exposing pupae to heat stress decreased the reproductive capacity of adults.
作者
张天浩
惠琴
赵义涛
张仙红
ZHANG Tian-Hao;HUI Qin;ZHAO Yi-Tao;ZHANG Xian-Hong(College of Agriculture,Shanxi Agricultural University,Jinzhong 030801)
出处
《应用昆虫学报》
CAS
CSCD
北大核心
2020年第2期363-370,共8页
Chinese Journal of Applied Entomology
基金
现代农业产业技术体系专项(CARS-08-G10)
晋西北杂粮优质绿色关键技术研究与示范(201703D211002-8)
山西省重点研发计划项目(201803D221004-8)
山西省应用基础研究项目(201801D221305)。
关键词
绿豆象
高温
生长发育
产卵量
寿命
Callosobruchus chinensis
short-term high stress
development
egg production
longevity
